Weather Alerts For Vivian, SD

# HEADLINE -------------------- RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 9 PM CDT /8 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF CENTRAL TO SOUTH CENTRAL SOUTH DAKOTA # DETAILS -------------------- AFFECTED AREA In South Dakota, Stanley, Hughes, Jones and Lyman. WINDS South 10 to 20 mph with gusts up to 35 mph. RELATIVE HUMIDITY As low as 15 percent. IMPACTS Any fires that ignite will spread rapidly and become difficult to control or suppress. ISSUED AT Monday, May 11, 2026 at 9:00 AM CDT ISSUED BY National Weather Service Aberdeen SD HEADER URGENT - FIRE WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. # AREAS AFFECTED -------------------- Hughes, Jones, Lyman, Stanley

Pollen Index: 10.3 Pollen Level: high Predominant Pollen: Elm, Cedar/Juniper and Ash. The quantity of pollen grains in the air for Tuesday will be on the increase and extend even further into the extremely high range. This increase is due to strong winds and decreasing humidity.